:root {
  --bg: #0a0f1e;
  --bg-elev: #0f1628;
  --sidebar: #0c1322;
  --surface: #141c33;
  --surface-2: #1a2340;
  --border: #1f2a4a;
  --border-strong: #2a3760;
  --text: #e8ecf5;
  --text-dim: #9ba5bd;
  --text-mute: #6b758f;
  --accent: #5b8def;
  --accent-2: #7c3aed;
  --accent-glow: rgba(91, 141, 239, 0.25);
  --ok: #34d399;
  --warn: #fbbf24;
  --err: #f87171;
  --user-bubble: linear-gradient(135deg, #5b8def, #7c3aed);
  --radius: 10px;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(124, 58, 237, 0.08), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(91, 141, 239, 0.06), transparent 60%),
    var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* ===== Auth screen ===== */
.auth-screen {
  position: fixed; inset: 0;
  display: grid; place-items: center;
  padding: 1.5rem;
  z-index: 50;
}
.auth-card {
  width: 100%; max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 24px 80px rgba(0,0,0,0.45);
}
.auth-brand { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 1.5rem; }
.brand-mark.big { width: 44px; height: 44px; font-size: 1rem; border-radius: 11px; }
.auth-tabs {
  display: grid; grid-template-columns: 1fr 1fr;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 1.4rem;
}
.auth-tab {
  background: transparent; border: 0; color: var(--text-dim);
  padding: 0.55rem; border-radius: 7px; cursor: pointer;
  font: inherit; font-weight: 500; font-size: 0.85rem;
  transition: background 0.12s, color 0.12s;
}
.auth-tab.active { background: var(--surface-2); color: var(--text); }

.auth-form { display: flex; flex-direction: column; gap: 0.85rem; }
.field { display: flex; flex-direction: column; gap: 0.35rem; }
.field > span { font-size: 0.78rem; color: var(--text-dim); font-weight: 500; }
.field input {
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: 0.6rem 0.75rem;
  color: var(--text);
  font: inherit; font-size: 0.9rem;
  transition: border-color 0.12s, box-shadow 0.12s;
}
.field input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.hint { color: var(--text-mute); font-size: 0.72rem; }

.auth-error {
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.3);
  color: var(--err);
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  font-size: 0.82rem;
}
.auth-submit {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white; border: 0;
  border-radius: 9px;
  padding: 0.7rem;
  font: inherit; font-weight: 600; font-size: 0.9rem;
  cursor: pointer;
  margin-top: 0.3rem;
  box-shadow: 0 6px 20px var(--accent-glow);
  transition: transform 0.08s, box-shadow 0.15s;
}
.auth-submit:hover:not(:disabled) { box-shadow: 0 8px 26px rgba(91,141,239,0.4); }
.auth-submit:active { transform: translateY(1px); }
.auth-submit:disabled { opacity: 0.6; cursor: not-allowed; }
.auth-footer {
  text-align: center; color: var(--text-mute);
  font-size: 0.78rem; margin-top: 0.6rem;
}
.auth-link-btn {
  background: none;
  border: 0;
  color: var(--accent);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0;
}
.auth-link-btn:hover { text-decoration: underline; }

/* Verify panel */
.verify-panel { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 0.7rem; }
.verify-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center;
  color: white; box-shadow: 0 8px 28px var(--accent-glow);
  margin-bottom: 0.2rem;
}
.verify-icon svg { width: 26px; height: 26px; }
.verify-title { font-size: 1.1rem; font-weight: 600; }
.verify-body { color: var(--text-dim); font-size: 0.88rem; line-height: 1.6; max-width: 320px; }
.verify-body strong { color: var(--text); }
.verify-hint {
  background: rgba(251,191,36,0.08);
  border: 1px solid rgba(251,191,36,0.3);
  color: var(--warn);
  border-radius: 8px;
  padding: 0.55rem 0.75rem;
  font-size: 0.78rem;
  text-align: left;
  width: 100%;
}
.verify-actions { display: flex; gap: 0.5rem; margin-top: 0.5rem; }

.verify-form {
  display: flex; flex-direction: column; gap: 0.6rem;
  width: 100%; margin-top: 0.4rem;
}
.panel-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.6rem;
  align-items: stretch;
  width: 100%;
}
.panel-input {
  width: 100%;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 0.72rem 0.85rem;
  color: var(--text);
  font: inherit;
  transition: border-color 0.12s, box-shadow 0.12s;
}
.panel-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.panel-action-btn {
  white-space: nowrap;
  align-self: stretch;
}
.code-input {
  width: 100%;
  text-align: center;
  font-family: "JetBrains Mono", Consolas, Menlo, monospace;
  font-size: 1.6rem;
  letter-spacing: 0.55rem;
  padding: 0.7rem 0.4rem 0.7rem 0.95rem;  /* offset for letter-spacing */
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  color: var(--text);
  transition: border-color 0.12s, box-shadow 0.12s;
}
.code-input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.code-input::placeholder { color: var(--text-mute); letter-spacing: 0.55rem; }
.verify-status {
  font-size: 0.82rem; color: var(--text-dim);
  padding: 0.4rem 0.6rem; border-radius: 6px;
  background: var(--bg-elev); border: 1px solid var(--border);
  width: 100%; text-align: center;
}
.verify-status.ok  { color: var(--ok);  border-color: rgba(52,211,153,0.4); }
.verify-status.err { color: var(--err); border-color: rgba(248,113,113,0.4); }

@media (max-width: 520px) {
  .panel-row {
    grid-template-columns: 1fr;
  }

  .panel-action-btn {
    width: 100%;
  }
}

/* ===== Layout ===== */
.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
  background: var(--sidebar);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  padding: 1.25rem 1rem;
  gap: 1.25rem;
  overflow-y: auto;
}

.brand { display: flex; align-items: center; gap: 0.7rem; padding: 0.25rem 0.4rem; }
.brand-mark {
  width: 36px; height: 36px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: grid; place-items: center;
  font-weight: 700; font-size: 0.85rem; letter-spacing: 0.04em;
  color: white;
  box-shadow: 0 4px 16px var(--accent-glow);
}
.brand-name { font-weight: 600; font-size: 0.95rem; }
.brand-sub { color: var(--text-mute); font-size: 0.72rem; letter-spacing: 0.04em; text-transform: uppercase; }

.nav { display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 0.7rem;
  background: transparent; border: 0; color: var(--text-dim);
  padding: 0.55rem 0.7rem; border-radius: 8px;
  cursor: pointer; font: inherit; font-weight: 500;
  text-align: left;
  transition: background 0.12s, color 0.12s;
}
.nav-item svg { width: 16px; height: 16px; opacity: 0.85; }
.nav-item:hover { background: var(--surface); color: var(--text); }
.nav-item.active { background: var(--surface-2); color: var(--text); }
.badge-count {
  margin-left: auto;
  background: var(--border-strong);
  color: var(--text-dim);
  font-size: 0.7rem;
  padding: 0.05rem 0.45rem;
  border-radius: 999px;
  min-width: 1.4rem; text-align: center;
}

.sidebar-section { display: flex; flex-direction: column; gap: 0.5rem; }
.section-title {
  font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--text-mute); padding: 0 0.4rem;
}

.dropzone {
  display: flex; align-items: center; gap: 0.8rem;
  background: var(--surface);
  border: 1.5px dashed var(--border-strong);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dropzone:hover, .dropzone.drag {
  border-color: var(--accent);
  background: var(--surface-2);
}
.dropzone svg { width: 22px; height: 22px; color: var(--accent); flex-shrink: 0; }
.dz-title { font-weight: 600; font-size: 0.85rem; }
.dz-sub { color: var(--text-mute); font-size: 0.75rem; }
.formats { color: var(--text-mute); font-size: 0.7rem; padding: 0 0.4rem; }

.upload-status {
  padding: 0.55rem 0.7rem;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-dim);
}
.upload-status.ok   { border-color: rgba(52,211,153,0.4); color: var(--ok); }
.upload-status.err  { border-color: rgba(248,113,113,0.4); color: var(--err); }
.upload-status.busy { color: var(--accent); }

.sidebar-footer { margin-top: auto; display: flex; flex-direction: column; gap: 0.6rem; padding: 0.5rem 0.4rem; }

.user-card {
  display: flex; align-items: center; gap: 0.6rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.55rem 0.7rem;
}
.user-avatar {
  width: 32px; height: 32px; border-radius: 8px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white; font-weight: 700; font-size: 0.75rem;
  display: grid; place-items: center; flex-shrink: 0;
  text-transform: uppercase;
}
.user-info { min-width: 0; flex: 1; }
.user-name {
  font-size: 0.82rem; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.user-email {
  font-size: 0.7rem; color: var(--text-mute);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.icon-btn {
  background: transparent; border: 0; cursor: pointer;
  color: var(--text-mute); padding: 0.3rem;
  border-radius: 6px;
}
.icon-btn:hover { color: var(--err); background: rgba(248,113,113,0.1); }
.icon-btn svg { width: 16px; height: 16px; display: block; }

.footer-row { display: flex; align-items: center; gap: 0.5rem; font-size: 0.78rem; color: var(--text-dim); }
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--text-mute);
}
.status-dot.ok  { background: var(--ok);  box-shadow: 0 0 8px rgba(52,211,153,0.6); }
.status-dot.err { background: var(--err); box-shadow: 0 0 8px rgba(248,113,113,0.6); }

/* ===== Content ===== */
.content { display: flex; flex-direction: column; overflow: hidden; }
.view { display: none; flex-direction: column; flex: 1; min-height: 0; }
.view.active { display: flex; }

.content-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  padding: 1.5rem 2rem 1rem; border-bottom: 1px solid var(--border);
  gap: 1rem;
}
.content-header h1 { margin: 0 0 0.25rem; font-size: 1.25rem; font-weight: 600; }
.subtitle { margin: 0; color: var(--text-dim); font-size: 0.85rem; }

.ghost-btn {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--text);
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  cursor: pointer;
  font: inherit; font-size: 0.85rem;
  display: inline-flex; align-items: center; gap: 0.45rem;
}
.ghost-btn:hover { border-color: var(--accent); }
.ghost-btn svg { width: 14px; height: 14px; }

/* ===== Chat ===== */
.chat { display: flex; flex-direction: column; flex: 1; min-height: 0; }
.messages {
  flex: 1; overflow-y: auto;
  padding: 1.5rem 2rem;
  display: flex; flex-direction: column; gap: 1.25rem;
}
.empty-state {
  margin: auto; text-align: center; color: var(--text-mute);
  display: flex; flex-direction: column; align-items: center; gap: 0.6rem;
}
.empty-state svg { width: 36px; height: 36px; color: var(--text-mute); }
.empty-title { font-size: 0.95rem; color: var(--text-dim); }
.empty-sub { font-size: 0.82rem; }

.msg { display: flex; gap: 0.75rem; align-items: flex-start; max-width: 100%; }
.msg.user { flex-direction: row-reverse; }
.avatar {
  width: 32px; height: 32px; border-radius: 8px;
  display: grid; place-items: center;
  font-size: 0.7rem; font-weight: 600; letter-spacing: 0.04em;
  flex-shrink: 0;
}
.msg.user .avatar { background: var(--user-bubble); color: white; }
.msg.assistant .avatar { background: var(--surface-2); color: var(--text-dim); border: 1px solid var(--border); }

.bubble {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.85rem 1.05rem;
  max-width: 78%;
  white-space: pre-wrap;
  word-wrap: break-word;
}
.msg.user .bubble {
  background: var(--user-bubble);
  color: white;
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(91,141,239,0.18);
}
.bubble-body { white-space: pre-wrap; word-wrap: break-word; }
.bubble-body .typing {
  display: inline-block; width: 8px; height: 8px;
  background: var(--text-dim); border-radius: 50%;
  margin-left: 4px; animation: pulse 1.1s infinite; vertical-align: middle;
}
@keyframes pulse { 0%,100% { opacity: 0.25; } 50% { opacity: 1; } }

/* -- ETA countdown -- */
.eta-timer {
  font-size: 0.74rem;
  color: var(--text-mute);
  margin-top: 0.4rem;
  font-style: italic;
}

/* -- Markdown rendered content -- */
.bubble-body h1, .bubble-body h2, .bubble-body h3, .bubble-body h4 {
  margin: 0.7em 0 0.3em;
  font-weight: 600;
  line-height: 1.35;
}
.bubble-body h1 { font-size: 1.15rem; }
.bubble-body h2 { font-size: 1.05rem; }
.bubble-body h3 { font-size: 0.95rem; }
.bubble-body h4 { font-size: 0.88rem; color: var(--text-dim); }

.bubble-body p { margin: 0.5em 0; }
.bubble-body ul, .bubble-body ol {
  margin: 0.5em 0;
  padding-left: 1.5em;
}
.bubble-body li { margin: 0.25em 0; }
.bubble-body li::marker { color: var(--accent); }

.bubble-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 0.6em 0;
  font-size: 0.82rem;
}
.bubble-body th, .bubble-body td {
  border: 1px solid var(--border-strong);
  padding: 0.4rem 0.6rem;
  text-align: left;
}
.bubble-body th {
  background: var(--surface-2);
  font-weight: 600;
  color: var(--text);
}
.bubble-body tr:nth-child(even) td { background: var(--bg-elev); }

.bubble-body pre {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  overflow-x: auto;
  margin: 0.6em 0;
}
.bubble-body code {
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.82em;
}
.bubble-body :not(pre) > code {
  background: var(--surface-2);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  color: var(--accent);
}

.bubble-body blockquote {
  border-left: 3px solid var(--accent);
  margin: 0.5em 0;
  padding: 0.3em 0.8em;
  color: var(--text-dim);
  background: var(--bg-elev);
  border-radius: 0 6px 6px 0;
}

.bubble-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 0.8em 0;
}

.bubble-body strong { color: var(--text); }
.bubble-body a { color: var(--accent); text-decoration: underline; }

.grounding {
  margin-top: 0.6rem; font-size: 0.78rem;
  padding: 0.35rem 0.6rem; border-radius: 6px;
  display: inline-flex; align-items: center; gap: 0.4rem;
}
.grounding.ok   { background: rgba(52,211,153,0.10); color: var(--ok); border: 1px solid rgba(52,211,153,0.3); }
.grounding.warn { background: rgba(251,191,36,0.10); color: var(--warn); border: 1px solid rgba(251,191,36,0.3); }

.citations { margin-top: 0.7rem; font-size: 0.85rem; }
.citations summary {
  cursor: pointer; color: var(--text-dim);
  list-style: none; padding: 0.35rem 0; user-select: none; font-weight: 500;
}
.citations summary::before { content: "▸ "; color: var(--text-mute); font-size: 0.7rem; }
.citations[open] summary::before { content: "▾ "; }
.citations ol { padding-left: 1.1rem; margin: 0.4rem 0 0; }
.citations li {
  margin: 0.45rem 0; padding: 0.55rem 0.75rem;
  background: var(--bg-elev); border-radius: 6px;
  border: 1px solid var(--border);
}
.citations .src { color: var(--accent); font-size: 0.78rem; word-break: break-all; }
.citations .snippet { color: var(--text-dim); font-size: 0.8rem; margin-top: 0.3rem; }

.meta-row {
  margin-top: 0.55rem; font-size: 0.72rem;
  color: var(--text-mute); display: flex; gap: 0.8rem;
}
.feedback-row {
  margin-top: 0.55rem;
  display: flex;
  gap: 0.45rem;
}
.feedback-btn {
  border: 1px solid var(--border-strong);
  background: var(--bg-elev);
  color: var(--text-dim);
  border-radius: 8px;
  padding: 0.2rem 0.45rem;
  cursor: pointer;
  font-size: 0.86rem;
}
.feedback-btn:hover { border-color: var(--accent); color: var(--text); }
.feedback-btn.active {
  color: var(--ok);
  border-color: rgba(52,211,153,0.5);
  background: rgba(52,211,153,0.12);
}

/* ===== Composer ===== */
.composer {
  border-top: 1px solid var(--border);
  padding: 0.9rem 2rem 1.2rem;
  background: var(--bg-elev);
  display: flex; flex-direction: column; gap: 0.6rem;
}
.composer textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  color: var(--text);
  padding: 0.75rem 0.9rem;
  font: inherit; font-size: 0.95rem;
  resize: none; max-height: 200px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.composer textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.composer-actions { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.composer-opts { display: flex; gap: 1rem; align-items: center; color: var(--text-dim); font-size: 0.82rem; }
.composer-opts label { display: flex; align-items: center; gap: 0.4rem; }
.composer-opts input[type="number"] {
  width: 4rem;
  background: var(--surface); border: 1px solid var(--border-strong);
  color: var(--text); border-radius: 6px; padding: 0.3rem 0.4rem;
  font: inherit; font-size: 0.8rem;
}
.toggle input[type="checkbox"] { accent-color: var(--accent); }

.composer button[type="submit"] {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: white; border: 0; border-radius: 8px;
  padding: 0.55rem 1.1rem; font: inherit; font-weight: 600; font-size: 0.88rem;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 0.5rem;
  box-shadow: 0 4px 16px var(--accent-glow);
  transition: transform 0.08s, box-shadow 0.15s;
}
.composer button[type="submit"]:hover:not(:disabled) { box-shadow: 0 6px 22px rgba(91,141,239,0.4); }
.composer button[type="submit"]:active { transform: translateY(1px); }
.composer button[type="submit"]:disabled { opacity: 0.55; cursor: not-allowed; box-shadow: none; }
.composer button[type="submit"] svg { width: 14px; height: 14px; }

/* ===== Library ===== */
.doc-list {
  padding: 1.25rem 2rem; overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.85rem; align-content: start;
}
.doc-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 0.9rem 1rem;
  display: flex; gap: 0.85rem; align-items: flex-start;
  transition: border-color 0.15s, transform 0.08s;
}
.doc-card:hover { border-color: var(--border-strong); transform: translateY(-1px); }
.doc-icon {
  width: 36px; height: 36px; border-radius: 8px;
  background: var(--surface-2);
  display: grid; place-items: center;
  font-size: 0.65rem; font-weight: 700; letter-spacing: 0.04em;
  color: var(--accent); flex-shrink: 0; text-transform: uppercase;
}
.doc-info { min-width: 0; flex: 1; }
.doc-name {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.doc-meta {
  margin-top: 0.2rem;
  color: var(--text-dim);
  font-size: 0.78rem;
}
.doc-meta-row {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 0.45rem;
  color: var(--text-mute);
  font-size: 0.75rem;
  flex-wrap: wrap;
}
.doc-status {
  display: inline-flex;
  align-items: center;
  padding: 0.14rem 0.48rem;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  text-transform: capitalize;
}
.doc-status.ready {
  color: var(--ok);
  border-color: rgba(52,211,153,0.35);
  background: rgba(52,211,153,0.08);
}
.doc-status.processing {
  color: var(--accent);
  border-color: rgba(91,141,239,0.35);
  background: rgba(91,141,239,0.08);
}
.doc-status.failed {
  color: var(--err);
  border-color: rgba(248,113,113,0.35);
  background: rgba(248,113,113,0.08);
}
.doc-delete-btn {
  background: transparent;
  border: 1px solid rgba(248,113,113,0.25);
  color: var(--err);
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
  font: inherit;
  font-size: 0.78rem;
}
.doc-delete-btn:hover {
  background: rgba(248,113,113,0.08);
  border-color: rgba(248,113,113,0.45);
}

/* Folder upload button */
.folder-upload-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.6rem 0.85rem;
  margin-top: 0.5rem;
  background: var(--surface);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius);
  color: var(--text-dim);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  transition: border-color 0.15s, color 0.15s;
}
.folder-upload-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.folder-upload-btn svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Chat History */
.chat-history-section .section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.new-chat-btn {
  width: 22px;
  height: 22px;
  padding: 2px;
  border-radius: 4px;
  color: var(--text-dim);
}
.new-chat-btn:hover { color: var(--accent); background: var(--surface-2); }
.chat-history-list {
  max-height: 200px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.chat-history-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--text-dim);
  transition: background 0.15s, color 0.15s;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}
.chat-history-item:hover { background: var(--surface-2); color: var(--text); }
.chat-history-item.active { background: var(--surface-2); color: var(--accent); }
.chat-history-item .chat-title {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.chat-history-item .chat-delete {
  opacity: 0;
  color: var(--text-mute);
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px;
  font-size: 0.75rem;
  border-radius: 3px;
}
.chat-history-item:hover .chat-delete { opacity: 1; }
.chat-history-item .chat-delete:hover { color: var(--err); }
.chat-history-item .chat-export {
  opacity: 0;
  color: var(--text-mute);
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px;
  font-size: 0.85rem;
  border-radius: 3px;
}
.chat-history-item:hover .chat-export { opacity: 1; }
.chat-history-item .chat-export:hover { color: var(--accent); }
.chat-history-empty {
  font-size: 0.75rem;
  color: var(--text-mute);
  text-align: center;
  padding: 12px 0;
}

/* Follow-up suggestion chips */
.suggestions-row {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.suggestions-label {
  width: 100%;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-mute);
  margin-bottom: 2px;
}
.suggestion-chip {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 16px;
  padding: 6px 12px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
}
.suggestion-chip:hover {
  border-color: var(--accent);
  color: var(--text);
  background: var(--accent-glow);
}

/* Scope selector in composer */
#scope-select {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 3px 6px;
  font-size: 0.8rem;
  max-width: 160px;
}

/* Folder cards in library */
.folder-card {
  grid-column: 1 / -1;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.15s;
}
.folder-card:hover {
  border-color: var(--border-strong);
}
.folder-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.9rem 1rem;
  cursor: pointer;
  user-select: none;
}
.folder-header:hover {
  background: var(--surface-2);
}
.folder-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(91, 141, 239, 0.1);
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.folder-icon svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
}
.folder-info {
  flex: 1;
  min-width: 0;
}
.folder-name {
  font-weight: 600;
  font-size: 0.9rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.folder-chevron {
  width: 20px;
  height: 20px;
  color: var(--text-mute);
  transition: transform 0.2s;
}
.folder-chevron svg {
  width: 20px;
  height: 20px;
}
.folder-card.expanded .folder-chevron {
  transform: rotate(180deg);
}
.folder-contents {
  display: none;
  padding: 0 0.75rem 0.75rem;
  gap: 0.5rem;
}
.folder-card.expanded .folder-contents {
  display: grid;
  grid-template-columns: 1fr;
}
.folder-contents .doc-card {
  border-color: var(--border);
  background: var(--bg-elev);
}
.doc-info { min-width: 0; flex: 1; }
.doc-name {
  font-weight: 500; font-size: 0.88rem;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.doc-meta { color: var(--text-mute); font-size: 0.74rem; margin-top: 0.2rem; }
.doc-list-empty {
  grid-column: 1 / -1; text-align: center; color: var(--text-mute);
  padding: 3rem 1rem; font-size: 0.9rem;
}

.analytics-wrap {
  padding: 1.25rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  overflow-y: auto;
}
.analytics-error {
  border: 1px solid rgba(248,113,113,0.4);
  background: rgba(248,113,113,0.1);
  color: var(--err);
  border-radius: 8px;
  padding: 0.55rem 0.75rem;
  font-size: 0.82rem;
}
.analytics-summary {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.analytics-card {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
}
.analytics-card-label { color: var(--text-mute); font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.05em; }
.analytics-card-value { font-size: 1.1rem; font-weight: 600; margin-top: 0.2rem; }
.analytics-table-wrap {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 10px;
  overflow: hidden;
}
.analytics-table {
  width: 100%;
  border-collapse: collapse;
}
.analytics-table th,
.analytics-table td {
  padding: 0.65rem 0.75rem;
  font-size: 0.8rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.analytics-table th { color: var(--text-mute); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; }
.analytics-table tbody tr:last-child td { border-bottom: 0; }
.analytics-table .query-cell { max-width: 440px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.analytics-empty { color: var(--text-mute); padding: 1.2rem; text-align: center; }
.role-select {
  background: var(--bg-elev);
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  padding: 0.25rem 0.45rem;
  font: inherit;
  font-size: 0.78rem;
}
.role-select:disabled {
  opacity: 0.6;
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #364370; }